{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0xcb5ca9e1259cb98da4d501d2feeb3546cc2f536093596c7dcd33d1121ade61fc",
    "signature": "0xe87a522c9b9d1a131d40a6a77969d1a23cec888a1800cbb31b02a7a72383bdcf6f3670e4b11790d1fa4be2a539ab069cd8b4ab8949336de7963b43f6ef1ab59d1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}